Home / 20,942.64-31,424.21-9,850.46

Finding the Fourth Proportional to 20,942.64, 31,424.21 and 9,850.46

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Solution

The fourth proportional to 20,942.64, 31,424.21 and 9,850.46 is: 14,780.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.64 : 31,424.21 = 9,850.46 : x
  2. Step 2: Convert to fraction form
    20,942.64/31,424.21 = 9,850.46/x
  3. Step 3: Cross multiply
    20,942.64x = 31,424.21 × 9,850.46
  4. Step 4: Simplify right side
    20,942.64x = 309,542,791.14
  5. Step 5: Solve for x
    x = 309,542,791.14/20,942.64
  6. Step 6: Final answer
    x = 14,780.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.